Door stop, buffer, or silencer



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Patented Sept. 14, 1926.

UNITED STATES PATENT OFFICE.

OSCAR FRANCIS vro'ronrrrnn, or nnNnoN, AND CHARLES DAVID swAiN, on rur- NEY, LONDON, ENGLAND.

DOOR STOP, BUFFER, OR SILENCER.

Application filed March 10, 1925, Serial No. 14,520, and in Great Britain January 30, 1925.

. doors of vehicles and will be so described,

but it will be understood that it is not restricted to such use.

In the improved buffer a pair of resilient or resiliently mounted rollers are fixed on the door post or frame transversely to the closing movement of the door or in such manner that the closing edge of the door first engages and passes over one roller, and then engages and passes over the other, whereby the first roller takes up the first shock of closing, and the edge of the door then passes over and closes tightly against the second roller.

WVhere the door edge is made with a re-. bate as usual with vehicle doors, the first roller is located at the edge of the rebate so that when the door is finally closed the said roller is engaged by both faces of the corresponding recess in the door edge.

If desired, one roller alone or any desired number of rollers may be employed.

The accompanying drawings show one construction carried out in accordance with the present invention.

Fig. 1 is a face view partly in section,

Fig. 2 is a side or edge view.

Fig. 3 is a plan.

Fig. 4. is a face view partly in section showing a modification.

Fig. 5 is a cross section through a vehicle door having the invention fitted thereto.

In the construction illustrated, which will be described as fitted to a vehicle door as in Fig. 5, the buffer fitting consists of an I- shaped frame a carrying two rubber rollers b and 0, one mounted on each side and secured by pins or spindles d passing through the laterally projecting upper and lower arms of the frame a.

The roller 0 which comes nearest the inside of the door 6, Fig. 5, projects from the front face of the frame a and door post 7 and the other roller I) which is nearest the outside of the door projects from both the front and side faces of the frame a.

The roller 0 may be mounted with its face next the door edge, slightly in advance of the corresponding face of the outer roller 5.

The vertical portion of the frame a is adapted to receive screws 9 for fixing the buffer as a whole in place in a suitable rectangular recess provided in the face of the door post 7 for the purpose.

In operation, when the door 6 is closed its edge which is usually slightly bevelled, first comes into engagement with, and passes over and compresses the outer roller .7) which cushions the first shock on the closing door, then as the door is pushed home its edge rides over and compresses the inner roller 0 and the face of the projecting fillet h on the door is pressed against the face of the outer roller 6 where the latter projects into the rebate in the door post 7".

Anion st other advantages of the improve-d coor buffer may be mentioned the follow1ng:

1. The buffer frame can be a simple diecasting or stamping which in quantities would cost little.

2. The double roller gives a smooth, closing of the door, thereby avoiding window breakages when the door is slammed, since the first or outer roller 5 checks the violence of the slam and allows the door to be closed leisurely on the second roller 0.

3. The roller motion imparted to both the buffer rollers ensures a much longer life and offers less resistance to the closing door.

41:. When in the course of time replacements become necessary it is the work of a few minutes to fit a new roller.

5. Each buffer roller being in one piece they can be quickly fitted.

6. Unlike the usual circular type of buffer with its brass pocket the improved buffer can be fitted to the top and bottom rails of the door and underside of cant rail. The door can thus be buffered on three sides so as to give increased silence in use.

What we claim as ourinvention and desire to secure by Letters Patent is 1. A door stop comprising a frame, a yielding roller pivoted therein to project beyond the side and front at one end of the frame, and a second yielding roller pivoted in the frame at its opposite end to project only beyond the front face thereof.

2. A door stop for a hinged door consisting of a pair of rubber rollers arranged parallel to one another in a frame with one roller projecting from the side and front of the frame and the second roller projecting from the front of the frame.

3. A door stop consisting of an Ishaped frame of solid rectangular section, a rubber roller mounted between one pair of arms of said frame and projecting both from the front face and side of the frame, a second rubber roller mounted between the other pair of arms of the frame. and projecting 10 only from said face of the frame.

4. A door stopeonsisting of an Lshaped frame of solid rectangular section, a rubber roller mounted between one pair of arms of said frame and projecting both from the front face and side of the frame, a second rubber roller mounted between the other pair of arms of the frame and projecting only from said face of the frame a greater distance than the other roller.

OSCAR FRANCIS VICTOR PIPER. CHARLES DAVID SSVAIN. 

